Drilling and mortising machine



Sept. 24, 1929. LACEY 1,729,000

' DRILLING AND uoa-rrsme momma Filed April 19. 1928 I 4 Sheets-Sheet 1 /00 ,v Val/TOR Sept. 24, 1929. I E. G. LACEY 1,729,000

DRILLING AND MORTISING MACHINE Filed April 19, 1928 4 Sheets-Sheet 2\ fmw Sept. 24, 1929. G. LACEY v ,7

DRILLING AND MORTISING MACHINE Filed April 19. 1928 {Sheets-Sheet 3 z 6 em,

Sept. 24, 1929.

DRILLINGAND MORTISING MACHINE Apri l l9. 1928 Filed 4 Sheets-Sheet 4 Patented Sept. 24, 1929 was stares ERNEST GEORGE LAGEY, OF COLLINGWOOD, AUSTRALIA DRILLING AND MOBTISING MACHINE Application filed April 19, 1928, Serial No. 271,354, and in Australia April 29, 1927.

This invention relates to improvements in and connected with drilling and mortising machines, and refers especially, but is not limited, to drilling and mortising machines for woodworking purposes.

It is very often necessary in the manufacture of doors, window frames, chairs and like wooden articles of standardized sine and shape to bore holes or form mortises at various predetermined intervals in the sides or edges of straight or curved pieces of wood. This is sometimes accomplished by using templates or jigs or by the use of a mortising machine having a bar or like indexing member provided with stops by means of which the articles to be bored may be correctly located with respect to the cutting or drilling tool. These methods, however, are all more or less expensive and are diiiicultto apply in some classes of Work.

Now, the object of the present invention is to provide a drilling and mortising machine of simple and effective construction, whereby holes and/or mortises may be quickly and accurately produced at predetermined intervals in work of straight or curved formation and particularly when repetition work is to be performed.

1 accomplish the above mentioned object by providing a drilling and mortising machine having a pair of rollers adapted to feed the Work past adrill, bit or like cutting tool, one of said rollers being associated with an indexing member fitted or formed with stops, recesses or like means associated with a bolt or plunger whereby the work may be correctly located with respect to the tool to enable holes or mortises to be expeditiously and accurately formed at predetermined points in the length of'thc work.

A spindle adapted to support av drill, bit or like cutting tool is revolvably mounted on a fixed or adjustable portion of the machine and is provided with means whereby the cutting tool can be fed to or retracted from the work.

Salient features of the invention reside in the provision of means for adjusting the normal position of the bit or like cutting tool, in reiatien to the feed rollers, and. in maxim].

or automatic means for Varying the position of the drill or cutting tool during the opera tion of the machine.

In order that the invention, the object and nature of which have been set forth, may be readily understood reference will now be had to the accompanying sheets of explanatory drawings wherein Figure 1 is a view in front elevation of a machine constructed in accordance with the present invention.

Figure 2 is a view in plan of Figure 1.

Figure 3 is a view in sectional side elevation taken on the dotted line 33 of Figure 1.

Figure 4 is a view in sectional side elevation of portion of Figure 1 taken on the dotted line 14.

Figure 5 is a view in front elevation of portion of the machine which hereinafter will be fully described.

Figure 6 is a view in sectional plan of portion of the machine taken on the dotted line 66 of Figure 1.

Figure 7 is a view in section of portion of the drill carrying slide.

Figure 8 is a view in sectional plan taken 011 the dotted line 88 of Figure 7.

Figure 9 is a view in sectional side elevation of the indexing member for correctly determining the location of the work with respect to the drill.

Figure 10 is a view in front elevation of the parts shown in Figure 9.

Figure 11 is a view in perspective of the feed roller and attached indexing member.

Figures 12, 13 and 14 are views in front elevation, sectional side elevation and sectional plan, respectively, illustrating modifications in the indexing devices.

Figures i to 14 of the drawings are drawn to a larger scale than Figures 1, 2 and 3.

In these drawings the reference numeral 15 designates a frame preferably of cast metal having bearings thereon to accommodate a forwardly projecting horizontal spindle 16 which revolvably supports a feed roller 17 of comparatively large diameter and the face of which is suiiiciently wide to support the work to be located thereon.

An annular flange- 18 is fQI'IllGCl on. or is secured to the front of the feed roller and is adapted to removably support a thin metal band 19 Which is bent therearound and which is provided with stops in the form of notches 20 adapted to be engaged by a spring actuated plunger 21 slidably mounted in a bracket 22 secured to the frame. The plunger 21 may be located directly above the axis of the feed roller and is adapted to successively engage the notches 20 formed in the thin metal strip and so correctly determine the position of the holes or mortises to be formed in the work which is traversed laterally by the angular displacement or rotation of the feed roller.

The notched metal band 19 is detachably secured by screws, spring slips or the like to the annular flange 18 of the feed roller in such manner that others provided with differently arranged notches can be readily substituted therefor to suit any difference in the spacing of the holes or mortises to be formed in the work.

If desired the band may be made in the form of a hoop of a size which will enable it to be slipped snugly over the annular flange 18 on the feed roller whereby it will be frictionally retained in position thereon.

The notches in the metal band are preferably tapered on one side and parallel to the axis of the feed roller on the other (see Figure 11) and the engaging end of the spring actuated plunger is correspondingly shaped, so that the feed roller can be freely rotated in one direction, whilst retrograde movement will be prevented when the parts are engaged the one with the other.

The plunger 21 is provided with means for preventing its rotation whereby the engaging end thereof will be normally retained in correct alignment with the notches in the band.

The plunger 21v is formed with a stem which is surrounded by a compression spring 23 adapted to maintain its thrust rearwardly against the indexingstrip 19. The front end of the said stem is provided with a hand grip 24: of approved construction by means of which the operator can readily grasp the same and pull it outward against the spring 23 acting thereon so as to effect half a rotation of the same prior to allowing it to return to its normal position. The hand grip 24 is provided with recesses 25 in the sides thereof adapted to engage a locating pin 26 projecting forwardly from the bracket 22. The re cesses 25 in the head of the plunger are disposed in diametrical alignment whereby when the plunger is moved outwardly and rotated half a revolution and released the opposite recess will engage the pin 26 and retain the tapered side of the plunger towards the side of the notches parallel with the axis of the feed roller.

When the plunger is reversed as above described the feed roller can be operated to feed the work through the machine in a reverse direction to that above described.

A pointer 27 is adjustably mounted in the bracket 22 supporting the spring actuated plunger, and is so arranged that it is approximately level with the periphery of the feed roller 17 and when a template or sample of the work to be performed is passed through the machine by rotating the feed roller, and the pointer is disposed opposite to the centre of a hole or one end of a mortise therein, the spring actuated plunger may be given a blow with a hammer to form a notch in a blank metal strip 19 detachably secured to the an nular flange of the feed roller as above described.

The feed roller 17 is rotated to pass the template or sample of the work through the machine and whenever the pointer 27 aligns with a hole or the ends of a mortise to be formed therein, the plunger is given a blow with a hammer to form a notch 20 in the indexing band 19. lVhen the indexing band has been marked as above described the notches 20 indicating the position of a hole to be formed in the work may be enlarged by means of a file or other suitable tool as shown in Figure 11. The portions of the indexing strip between the notches which indicate the ends of a mortise to be formed in the work are removed as shown at 29 in Figure 11 whereby the feed roller may be oscillated within the confines of the slot so as to cause the bit or cutting tool t-o form a mortise of desired shape and length.

The ends of the elongated recess 29 in the indexing band correspond to the ends of a mortise to be formed in the work and are shaped to correspond to the opposed faces of the inner end of the plunger 21 and if pre ferred the recess may be made sufficiently deep to cause the parallel side of the plunger adjacent to the tapered face thereof to con tact with a straight portion on the bevelled ends of the said recess.

A radially disposed locating member 30 is secured to the periphery of the feed roller and a notch 31 is formed in the thin metal band so as to locate the feed roller in the normal or starting position, i. c. with the following edge of the locating member disposed opposite to the centre of the drill or cutting tool 32.

The hub of the feed roller 17 can be fitted wit-h an adjust-ably mounted arn'i 17 having a weighted outer extremity as shown in Figure 11 of the drawings. The arm is retained in a desired position on the hub of the wheel by means of a set screw 17 and said weighted arm is disposed in such a way as to ensure the feed roller being returned to its normal or starting position when the plunger 21 is disengaged from the notches in the indexing band.

When it is not desired to use the weighted arm for the purpose above indicated the set screw 17 is unscrewed when the weighted arm will swing freely on the hub of the feed roller and will not act as a counterbalance. A collar 17 is fitted to the ends of the hub of the feed roller in order to retain the weighted arm in position thereon.

It will be understood that the indexing strip must be located in the normal position above mentioned before any work is fed into the machine.

Suitable hand grips as a capstan wheel 33 may be secured to the feed roller in order that the operator of the machine may readily rotate the same when desired and the periphcry of the feed roller can be made plain or provided with serrations as shown in Figure 10 of the drawings.

A grooved, serrated or other approved form of pressure roller 34 is adjustably sup ported above the feed roller, and is adapted to be thrust downwardly on to the work by spring pressure to prevent the said work bedisplaced while being operated upon by the drill or cutting tool 32.

The pressure roller is supported on an arbor 35 fitted to an arm 36 having a threaded engagement with a vertically adjustable rod 37 provided with a spring 38 which exerts a downward thrust thereon. The said rod 37 is adapted to be raised to elevate the pressure roller by depressing a foot lever 39 arranged within convenient reach of the operator when it is required to insert the work in the machine and remove it therefrom.

The upper end of the rod 37 is provided with an operating handle 40 by means of which it may be rotated to raise and lower the arm 36 whereby the pressure roller can be adjusted at a required distance from the feed roller to suit the thickness of the work to be passed through the machine. The end of the arm 36 opposite that carrying the arbor 35 is shaped to slidably engage a pillar 41 projecting upwardly from the frame of the machine and the slidable engagement between the arm and the pillar ensures the pressure roller being retained in an operative position.

Vertical guides 42 are formed on the frame of the machine and preferably are so d1sposed that when viewed in plan they are in alignment with the axis of the feed roller. The guides are of tapered formation and are adapted to be engaged at one side at least by correspondingly tapered spring jaws 43 formed on opposite ends of a slide 44in which is mounted the rotatable member carrying the boring or cutting tool as shown in Fig. 6.

The opposed jaws 43 of each pair are connected by bolts 45 whereby they may be drawn towards each other to neatly engage the tapered guides 42 on the main frame. By means of this construction, the use of gib strips is obviated, whilst a cheaper and more efficient slide is produced.

A sleeve 46 disposed parallel to the axis of the feed roller is rotatively supported in antifriction bearings 47 carried in housings on the upper end of the slide 44 and is fitted with collars 48 adapted to prevent axial movement thereof.

A spindle 49 is reciprocatingly but non-rotatively supported within the sleeve 46 and the end thereof disposed nearest to the feed roller is formed with a central hole 50 constituting a socket for the shank of the boring or cutting tool 32.

The forward end of the sleeve 46 is shaped to receive a steadying member 51 provid d with an axial hole through which the cutting tool passes. The cap is preferably constructed of hardened steel and the hole therein is of such size as to support the end of the cutting tool and prevent the same creeping, or moving out of axial alignment as when working in woodhaving hard and soft portions or in substance of unhomogenous nature.

The end of the spindle which is bored to form a socket for the cutting tool can be provided with a longitudinally disposed saweut 53 which terminates in a diametrical hole whereby the socket can be made to fit tightly on drill shanks of slightly different diameter by tightening a set screw 54 arranged to pass diametrically through the spindle see Fig ure 7.

The rear end of the spindle 49 is provided with one or more longitudinaly disposed keyways 52 adapted to accommodate keys 55 having lugs 56 formed thereon to receive the inner member of an antifriction bearing 57. The sleeve 46 is provided with slots 59 on opposite sides thereof to permit of the longitudinal movement of the keys 55 when the spindle is actuated to move the bit towards the work and for retracting the same. The keys 55 are retained fixedly in position by means of a nut 60 fitted to a thread formed on the reduced rear end of the spindle, see Fig ure 7 of the drawings. The outer member of the antifrictional bearing 57 is accommodated within a collar 58 having one side thereof provided with a jaw in which a thrust rod 61 is secured by means of a bolt 61 and the forward part of the thrust rod is slidably engaged by jaws formed in the housing for the bearings 47.

The thrust rod is retained within the jaws formed on the housings of the bearings 47 by means of removable side plates 63 the lower one of which is provided with a depending portion 64 to which is pivoted the lower end of a lever 65.

A boss 66 having an offset portion is mounted on the lever and a stud on the said offset portion is connected by means of a link 67 to the bolt 61 whereby when the lever is moved forwardly the drill spindle will be moved to,-

Gil

wards the work and when the said lever is moved rearwardly a corresponding movement will be imparted to the bit carrying spindle.

The extent to which the bit carrying spindle can be moved forwardly may be determined by a stop 68 which is adjustably fitted to the thrust rod and is arranged to abut against the housing of the rear ball bearing 47.

The adjustable stop may project upwardly from the front end of a bar 69 disposed longitudinally on the rear end of the thrust rod and loosely engaged by the jaw of the collar 58 supporting the same and the bar can be secured in any adjusted position by means of a pinch screw 70 passing through the upper member of the jaw on the collar or arranged in any other approved way.

When it is desired to bore holes of different depths, a flexible stop as 71 can be fitted to the housing for the front bearing 47 and in line with the thrust rod 61. The flexible stop is adjustably secured to the said housing by means of a slot 72 and set screw 73 and the increased resistance offered by the depending front end of the flexible stop to the forward thrust of the rod 62 would indicate to the operator that the cutting tool has bored to a predetermined depth or to the depth of the shallower hole to be bored.

The stop 68 in this case is set to arrest the forward movement of the drill spindle when the deepest hole is bored and the flexible stop will move outwardly as indicated in dotted lines in Figure 7 to permit of the forward movement of the thrust rod when a hole is to be bored of greater depth than that indicated by the said flexible stop.

A pulley 74. is secured to the sleeve l6 and a belt 7 5 passing therearound engages a driving pulley 76 secured toa drive shaft 77 mounted in suitable bearings (not shown) on the frame of the machine.

If desired belt tensioning mechanism as 78, operated by a hand lever 79, may be fitted to the machine in order to obviate the use of fast and loose pulleys and belt shifting mechanism for throwing the cuttingtool out of operation when desired.

In. order that the tension on the driving belt may be maintained uniform to ensure the satisfactory operation of the machine when the slide carrying the bit or-cutting tool is raised or lowered, the driving belt after passing around the pulley 74 on the sleeve is led downwardly around an idle pulley 80 on the slide and thence upwardly around another pulley 81 on a spindle carried by a pivoted 'arm 82 of the lever controlled tensioning device before passing to the driving pulley.

It will be understood that by the use of the construction above described relative rotary motion between the cutting tool and the steadying member is obviated whilst the said cutting tool can be fed or retracted axially in the usual manner, thus eliminating frictional resistance due to rotary motion.

A screwed vertical rod 88 passes through a correspondingly threaded boss 84; pivotally supported on screw pins 85 fitted in opposite sides of a loop shaped lateral extension 86 on the slide 44 and the reduced lower end of the rod is rotatively supported in a boss 87 pivotally mounted on the work arm 88 of a foot lever 89 pivotally mounted on an arbor 90 secured to a front and lower portion of the machine frame.

By depressing the power arm of the foot lever 89 the rod 88, slide i l and the drill spindle are correspondingly raised according to the extent to which the said lever is depressed. hen the operator removes his foot from the power arm of the lever the weight of the slide and the operative parts of the machine connected thereto or mounted thereon will cause them to return to their normal positions.

The upper end of the rod 83 is fitted with a hand wheel 91 whereby it may be readily rotated by the operator to raise or lower the slide and cutting tool with respect to the upper surface of the feed roller and to enable a hole or slot to be formed in the work at a cesired point- The extent to which the slide is raised is indicated by a pointer 83 on the frame and graduated markings on the front of the slide, see Figure 7.

A sector 92 is adjustably mounted by means of a slot and set screw 93 on the foot lever 89 and is provided with graduations 94 which. with a fixed pointer 95 on the foot lever register the amount of vertical movement imparted to the cutting tool.

A stop 96 is secured to the machine frame and is adapted to be engaged by a lug 97 formed on the adjustable sector when the foot lever is depressed to raise the cutting tool to a predetermined height above the upper surface of the feed roller.

Thus it will be understood that by adjusting the position of the sector on the foot lever by the aid of the graduations 94 and locking the same in its adjusted position by means of the slot and set screw 93 the lug 97 will be in such a position that when the foot lever is depressed it will contact with the stop 96 when the slide and drill spindle are correctly positioned to bore a hole at the desired elevation.

In lieu of employing the above mentioned adjusting mechanism for determining the extent to which the cutting tool is raised upon the depression of the foot lever, any other well-known and suitable mechanism may be utilized therefor.

In lieu of the operator rotating the feed roller by hand as above described, it may be slowly rotated by means of a light flexible driving member 98, the tension of which is sufficiently small to permit of the said feed roller being easily held stationary by hand or when the plunger 21 engages a notch in the indexing strip and a hole is to be bored.

The flexible driving member which is in the form of a belt may be passed around a band 99 titted to the capstan wheel or around a circular flange 18 carrying the indexing band as preferred and the said flexible band can be driven from a pulley (not shown) mounted on a shaft located in any approved position.

The plunger 21 engaging the indexing member 19 may be momentarily released automatically upon the rearward movement of the lever for reciprocating the drill carryingspindle and when the lever is released the plunger will move toward and bear on the edge of the indexim strip and engage the next succeeding notch in the indexing member upon the rotation of the feed roller. The plunger may be released by means of lever and link connections with a member associated with the lever controlling the forward and rearward movements of the drill spindle or in any other.

approved way.

One form of device for effecting the above mentioned object is illustrated in Figures 1, 2 and 3 of the drawings and comprises a rocking lever 100 having a bifurcated end engaging the spindle of the plunger and its 0))OSll38 end en a ing a rod 101 aass- D b a ing rearwardly through the frame of the machine. The rocking lever is curved rearwardly at or about its centre and this rearwardly curved portion is adapted to rock on. the bracket 22, whilst, a spring 102 on the portion of the rod 101 projecting beyond the face of the bracket is adapted to exert a forward thrust on that end of the rod and maintain it pressed outwardly from the bracket.

The rear end of the rod 101 pivotally connected to a lever 103 pivotally mounted on the rear of the machine and the free end of the said lever is adapted to lie in the path of movement of a projection 104 depending from the link 67 whereby when the drill spindle is thrust rearwardiy by operating the lever 05 the projections 10d will contact with the lever 103 and cause the rod 101 to be thrust inwardly and the forked end of the lever 100 to force the plunger 21 out of the notches in the indexing band.

The mechanism employed to momentarily release the plunger is adapted to be actuated upon the final rearward movement of the lever for reciprocating the spindle carrying the cutting tool.

The initial forward movement of the operating lever will move the depending portio1r10a away from the lever 103 and the spring 102 will return the rocking lever to its normal position thereby permitting the plunger to move inwardly and bear against the indexing band so that it will be free to engage a notch therein when the feed roller is further rotated. v

When a mortise is to be formed. a gap 29 is cut in the indexing band substantially equal in length to the mortise, and the plunger is preferably of such formation as to prevent the rotation of the feed roller beyond the confines of the gap in either direction until the plunger is withdrawn from the gap in the indexing band.

In forming the gap 29 in the indexing band whereby the rotation of the feed roller beyond the confines thereof in either directionwill be prevented said gap is made deeper than the tapered face on the plunger so that the parallel portion of the plunger adjacent the said tapered portion will bear against the end of the gap.

It will be obvious that if the depth of the gap is equal to or less than the length of the taper 011 the inner end of the plunger the thrust of the indexing hand against the bevelled portion of the plunger may tend to exert an outward pressure on the latter, and the feed roller to be rotated if an undue strain were applied thereto by the operator.

The indexing bands preferably are made of straight pieces of flexible bar metal, such as hoop iron, having holes in their ends adapted to take a bolt 105 or other fastening device and the concentric flange on the feed roller is provided with a gap 106 to accommodate the head or other projecting part of the fastening device in such a. way that the indexing strips cannot be rotated on the flange when placed in position thereon. The indexing band may have a snug fit on the annular flange and it can be retained in position thereon by any other suitable form of fastening device.

In Figures 12, 13 and 1 1 of the drawings is illustrated a modified form of indexing device. In these views the flange 18 is made comparatively shallow in depth and one or more segmental members. 107 having notches as 20 or recesses 29 therein are adjustably secured to the flange by means of set screws 108. These indexing members can be readily positioned and arranged to coact with the plunger 21 to permit of holes or slots to be bored at any desired position in the work.

The circumference of the feed roller will determine the length of work capable of being provided with holes or mortises spaced at regular or irregular distances apart.

Projecting forwardly from the front of the machine frame on each side of the upper part of the feed roller 17 is a spindle 109 upon which is rotatively mounted one or more supporting rollers 110 which are adapted to facilitate the passing of long lengths of straight material through the machine and the said supporting rollers can be removed when they are likely to interfere with the feeding of curved lengths of material through the machine.

IV hen long lengths of material are being worked upon, additional supporting rollers 111 may be mounted on lateral extensions 112 of the frame 15 as indicated on the left hand side of Figures 1 and 2 of the drawings. The lateral extension on the feed side of the machine is adapted to support lengths of timber or other material to be bored and after a length. of material has been passed through the machine it may he slid rearwardly on to the lateral extension on the opposite side of the machine, as'indicated' in dotted lines in Figures 1 and 2.

of one or more adjustably mounted spring arms 114: in the usual way.

In the foregoing description, I have described a machine wherein the axes of the feed roller, pressure roller and tool carrying spindle are arranged horizontally,but, it will be obvious that the parts of the machine can be readily designed to permit of the axes of the said parts being arranged vertically or at any desired angle to the horizontal.

I claim:

1. In drilling and mortising machines having an adjustable frame supporting a rotatively and reciprocatingly mounted cutting tool, a vertically arranged feed roller of comparatively large diameter rotatively mounted in advance of and below the cutting tool, devices for imparting rotation to the feed roller, a resiliently supported pressure roller for maintaining the work pressed upon the feed roller as it is passed through the machine, an indexing band mounted on the feed roller, a plunger supported in a bracket on the frame and adapted to bear resiliently against the indexing band, and notches in the indexing band adapted to be successively engaged by the plunger whereby the rotation of the feed roller will be arrested when the work is positioned correctly in advance of the cutting tool to form holes, slots and recesses at predetermined points in the length thereof.

2. In drilling or mortising machines, a frame, a slide adjustably supported in the frame, a cutting tool revolvably and reciprocatingly mounted on the slide, a vertically arranged feed roller of comparatively large diameter rotatively mounted on the frame in advance of and below the cutting tool, means for imparting rotation to the feed roller, an adjustably mounted pressure roller for maintaining the work pressed upon the feed roller, a flange arranged concentrically on the feed roller, an indexing band adjustably and removably mounted on the flange,

notches and recesses in the indexing member or members, a bracket rigidly supported on the frame in advance of the feed roller, a plunger resiliently mounted in the bracket and having one end adapted to be successively engaged by the notches and recesses in the indexing member when the feed roller is rotated, means for retaining the plunger out of engagement with the indexing member, and means for momentarily disengaging the said plunger from the indexing member or members when the cutting tool is retracted after boring a hole or forming a slot or mortise in the work.

3. In drilling and mortising machines, a frame having an adjustable slide for supporting a rotatively mounted cutting tool, means for reciprocating the cutting tool whereby it can be fed towards and retracted from the work passing through the machine, a rotatively mounted and vertically arranged feed roller of comparatively large diameter supported in advance of the machine, an adjustably mounted pressure roller for maintaining the work pressed upon the periphery of the feed roller, a circular indexing member adjustably and removably mounted on the front of the feed roller, means for imparting rotation to the feed rollers, stops on the indexing member, a bracket supported in advance of the feed 'roller, a resiliently mounted member carried by the bracketand adapted to engage with the successive stops when the feed roller is rotated whereby the work fed through the machine will be held stationary during boring and mortising operations performed by the cutting tool.

1. A drilling or mortising machine comprising a frame, a slide reciprocatingly mounted in the frame, a sleeve rotatively supported in bearings on the slide, a spindle slidably and non-rotatively mounted in the sleeve, a socket in one end of the spindle adapted to accommodate the shank of a cutting tool, an operating lever and connections for reciprocating the spindle endwise in the sleeve supporting the same, a feed roller of comparatively large diameter rotatively mounted on the frame in advance of and below the level of the cutting tool, an indexing member having stops formed thereon, a bracket supporting a recipmcating plunger in advance of the indexing member, a spring acting on and maintaining the plunger hearing resiliently against the indexing member whereby it will successively engage the stops, means for rotating the feed roller, an adjustably mounted pressure roller having a spring acting thereon for maintaining the work bearing against the feed roller, and means for releasing the pressure on the feed roller. v 5. In a drilling or mortising machine, ac cording to claim a, housings on the slide for supporting the bearings for the sleeve, a collar slid-ably mounted on the sleeve-and engaging the spindle, a rod fitted to the collar and having a slidable engagement with the housings, an operating lever pivoted to the slide, and a link connect-ion bet-ween the lever and the collar whereby the bit carrying spindle can be recipro *ated in the sleeve to form holes and slots in the work passing through the machine.

6. In drilling and mortising machines according to claim 2, a head on the plunger having recesses adapted to engage a stop iit ted tothe bracket to prevent the rotation of the said plunger, a rocking lever having one end engaging the head of the plunger, a rod connecting the opposite end of the rocking lever to a pivoted lever on the frame of the machine, a spring maintaining a forward thrust on the rod, a link connecting he operating lever to a collar on the spindle, and a depending member on the link connecting the operating lever to the collar constructed and arranged whereby when the operating lever is moved rearwardly the said depending member will contact with the pivoted lever and cause the rocking lever to be actuated to momentarily disengage the plunger from the indexing member on the feed roller.

7 In drilling and mortising machines according to claim 2, a rod passing vertically through the machine, means for effecting the rotation of the said rod, an arm having a threaded engagement with the red, one end of said rod slidably engaging a pillar on the f ame, an arbor on the opposite end of the arm rotatively supporting the feed roller, a spring maintaining a downward thrust on the rod, a foot operated lever pivotallyv mounted on the frame of the machine, and a work arm on the lever bearing against the lower end of the rod whereby when the said foot lever is depressed the pressure roller is raised to permit of the work being removed from the machine or adjusted on the feed roller thereof.

8. A drilling and mortising machine comprising a frame, a slide adjustably supported in the frame, a cutting tool revolvably and reciprocatingly mounted on the slide, a feed roller of comparatively large diameter rotatively mounted. on the frame in advance of and above the cutting tool, an adjustably mounted pressure roller for maintaining the work against the feed roller, one or more indexing members on the feed roller, notches and recesses in the indexing member or members, a resiliently mounted plunger having one end adapted to be successively engaged by the notches and recesses when the feed roller is rotated, a screwed rod passing vertically through the machine, a boss carried by a member on the slide and having a threaded engagement with the screwed part of the rod, a foot operating lever pivoted to the lower part of the frame and supporting a boss rotatively engaging the lower end of the screwed rod, and means for rotating the screwed rod to raise and lower the slide in the frame whereby the cutting tool can be adjusted vertically.

9. In drilling and mortising machines according to claim 8, a sector fitted concentrically to the foot operating lever, graduated markings on the sector, a fixed pointeradapted. to register with the graduated. markings, means for angularly adjusting the sector on the foot perated' lever, a lug on the sector, and an abutment on the frame constructed and arranged whereby the sector can be adjusted by means of the graduations and pointer to determine the extent to which the screwed rod and slide carrying the drill can be elevated by depressing the said foot lever.

10. In a drilling and mcrtising machine according to claim 8, a graduated sector adjustahly mounted on the foot operated lever, a pointer on the frame adapted to register with the gradnations on the sector whereby the sector can be set to indicate the extent of elevation imparted to the slide by the depression of the said foot operating lever, and an adjustable member on the foot operating lever adapted to co-act with a fixed stop whereby the vertical movement of the slide can be limited to the extent indicated by the pointer and graduations.

11. In drilling and mortising machines according to claim 3, a drive shaft rotatively mounted .on the frame, and belt and pulley gearing adapted to impart motion from the drive shaft to the sleeve and spindle supported rotatively in the upper end of the slide.

12. In drilling and mortising machines, according to claim l, slots in the rear end. of the sleeve, keyways in the spindle, keys passing through the slots in the sleeve and engaging the keyways in the spindle, projections on the keys engaging the inner ring of a ball bearing surrounding the sleeve, a collar surrounding the ball bearing, a thrust rod having one end fitted to the collar and the opposite end slidably mounted in housings on the slide for the bearings for supporting the sleeve, and means for imparting a reciprocating movement to the thrust rod to feed the drill spindle towards the work and to retract the same.

13. In drilling and mortising machines, a frame, a vertically arranged feed roller adapted to pass work through the machine, a pressure roller located above and adapted to maintain the work bearing frictionally on the feed roller, a boring tool rotatively mounted on the frame and adapted to be reciprocated between the feed roller and the pressure roller, an indexing member associated with the feed roller, a locating device coacting with the indexing member for arresting the movement of the feed roller Til at predetermined points to permit of holes or mortises being formed, and means asso ciated with the locating device for releasing the feed roller after each boring or mortising operation.

In wltness whereof I hereunto aflix my signature.

ERNEST GEORGE LACEY. 

